CadenceTutorial.docx

CadenceTutorial.docx

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CadenceTutorial

IntegratedCircuitDesignCADToolInformation

ThispagecontainscommonCADtoolinformationusedforthecoursesEEE4321（VLSICircuits）andEEE6321（AdvancedDigitalIntegratedCircuitDesign）.

CADToolandTechnologyInformation

∙Generalinformation

∙GettingstartedwithCadence2.6.1

∙On-lineCADtutorialonSchematicEditor

∙On-lineCADtutorialonSpectresimulationthroughtheAnalogDesignEnvironment（ADE）

∙On-lineCADtutorialonLayout

∙On-lineCADtutorialonDRC/LVSwithCalibre

∙On-lineCADtutorialonExtraction

∙On-lineCADtutorialonUltrasim

Questionsorcommentsforimprovementofthispagetoshepard@ee.columbia.edu

LastUpdated:

11/03/2011

EEE4321-VLSICIRCUITS

Textbookinformation

ThesebooksareallonreserveintheColumbiaEngineeringLibrary.

Requiredtext:

∙WesteandHarris,CMOSVLSIDesign:

ACircuitsandSystemsPerspective,Addison-Wesley,2010. FourthEdition!

Otherusefulbooks:

∙Rabaey,Chandrakasan,andNikolic,Digitalintegratedcircuits:

adesignperspective,Prentice-Hall,2003.（PleasenotethatthisistheSecondEditionoftheoriginalRabaeytext. Prof.Rabaey'sbookhasbecomethe"industrystandard"textbookforintroductoryVLSIdesigncourses.）

∙GlasserandDobberpuhl,TheDesignandAnalysisofVLSICircuits,Addison-Wesley.（Thisisanexcellentcircuitsbook,althoughithasunfortunatelybecomealittledated.）

∙Y.TaurandT.H.Ning,FundamentalsofModernVLSIDevices,CambridgeUniversityPress.（Thisisareallyexcellentdevicephysicsbook,probablythebestoneavailabletoday.）

∙Uyemura,CircuitDesignforCMOSVLSI,Kluwer.

∙Bernstein,Carrig,Durham,Hogenmiller,Nowak,andRohrer,HighSpeedCMOSDesignStyles,Kluwer.（Anexcellent"encyclopedia"ofpracticaldigitalcircuits.）

∙Sutherland,Sproull,andHarris,Logicaleffort:

designfastCMOScircuits,MorganKaufmann.（Veryreadabletextongain-basedtuningofdigitalcircuits.）

∙D.Harris,Skew-tolerantcircuitdesign,MorganKaufmann.（Anexcellentbookforunderstandingtimingissuesindigitalintegratedcircuits;agreatreferenceforthelecturesonlatchesandclocking.）

[EE4321HOME]

TeachingLabCADToolsInformation

Modernindustrialintegrated-circuit-designCADtoolswillbeanintegralpartofthiscourse.AllstudentsmusthaveaccesstotheCADtoolsetupatColumbia. Thispagecontainsrelevantadministrativeinformationforallyouneedtodotogetstartedwiththesetools.

Readthefollowing:

∙YouwillusetheLinuxworkstationsintheVLSICADLab（1218Mudd）orintheEmbeddedSystemsLab（1235Mudd）

∙Youneed

oSwipe/badgeaccesstothelab

oAnactiveloginID

∙Atthefirstclass,Iwillcollectlogininformationandarrangeforbadgeaccessandcomputeraccounts. Afterthefirstweekofclass,anyproblemswithbadgeaccessshouldbeaddressedtoJohnKazana,theEEdepartmentlabmanager. Problemswithloginaccesstothemachinesshouldbeaddressedto BillMcCabe,theEEdepartmentsystemsadministrator.

GuidelinesforworkingintheVLSICADLaborEmbeddedSystemsLab:

 BothcomputerlabsaremanagedbyEEDepartmentandtheyhavesomegeneralguidelineswhicharetobefollowedstrictly.Failuretocomplybytheserulesgenerallyresultsinpermanentdeletionoftheaccountwithoutmuchdiscussion.Inallcases,itwillbeextremelydifficultfortheinstructororTAtorestoretheaccount.

∙DoNOTbringanyfriends/visitorsinthelabandletthemusethemachinesonyouraccount. Thesearenot"public"machines,liketheCUITmachines.

∙Foodanddrinksareallowed,BUTyoumustbeVERYcarefulandcleanupafteryourself. Ifyoumakeamessordamageequipment,wewillsuspendthisprivilegeandyouwillberesponsibleforanydamagethatyoucause. Weareveryseriousaboutthis!

∙Thequotaforeachstudentis80MB.Therefore,itisimportantthatyoukeeponlyrelevantfilesinyourhome.Incase,yougenuinelyneedmorespace,consulttheTA.

∙DoNOTfirehugeprintingjobsatthelabprinter.PrintersareforyourconvenienceandprintinganythingotherthanHWorprojectfilesisNOTpermitted.Wehavelimitedquotaonthepaperandwehavetoworkwithinthoselimits.AlsoDONOTtrytoprinttooldocumentation.Suchfilesarehundredsofpages. IssuesregardingprintersuppliesshouldbeaddressedtoJohnKazana.

∙DoNOTrebootthemachines.Severalotherpeoplemighthaveimportantjobsrunningonthesamemachine.Contactsystemadministratorsincaseithangsorfreezes.

∙SystemAdministrator:

oBillMcCabe[trouble@ee.columbia.edu]

SomeFactsYouneedtoknow....

∙Defaultprintersshouldbesetcorrectlyforallthemachines. WhenyouprintfromthemachinesinMudd1218,theprint-outswillappearontheprinterinMudd1218. WhenyouprintfromthemachinesinMudd1235,theprint-outswillappearontheprinterinMudd1235.

∙WeencouragedoingyourhomeworkandprojectsintheMudd1218andMudd1235labs. ThisallowstheprofessorandTAtodowalk-throughandhelpyou. Italsoallowsyoutohelpeachother. However,youmaylogonremotely. Instructionsfordoingthiscanbefoundhere.

∙AllpathsforCADtoolsshouldbeautomaticallyset.

[EE4321HOME]

GettingStartedwithCadence2.6

ThispagewillhelpyousetupyourCadenceenvironment.

InyourLinuxdesktop,youwillseeafoldernamed"____'sHome".Insideitmakeanewfolder（directory）namedCadence.Thisiswhereyouwillberunningcadence.Openthisfolder,andright-clickyourmousetoopenaterminalthatwilllooklikethis:

Thetitleofthewindowcontainsinformationaboutyourloginandcurrentdirectory.Intheimageabove,theloginIDis'jaebin',thenameofthemachineis'linux8',andthecurrentdirectoryis'~/Cadence'.Yourhomedirectoryissymbolizedbythe'~'sign,andthe'/Cadence'partshowsthatIaminthedirectorycalledCadence.

Youcandoalmostanythingonthisterminalscreen,fromnavigatingtootherdirectories（folders）torunningsoftwarelikeCadence.Youwillneedtogetusedtothisscreen.Hereareafewusefulterminalcommandsthatwillhelpyouinthefuture:

gouponedirectory

cd..

changedirectory

cddestinationDirectory

copyallfilesfromdirectoryAtoB

cpdirectoryA/*directoryB

viewcurrentdirectory

pwd

viewlistoffilesincurrentdirectory

ls

openpdf

acroreadpdfname.pdf

makefolderatcurrentdirectory

mkdirnewname

initiateCadence

virtuoso&

ThefollowingfourfilesareneededtosetupyourCadenceenvironment:

   1）.cdsinit

   2）.cdsenv

   3）cds.lib

   4）display.drf

Youcancopythesefromthedirectory /usr/tools/cds/setup  toyourCadencedirectory（~/Cadence）bytypingthefollowinglineintheterminal:

       cp  /usr/tools/cds/setup/*  ~/Cadence

Thespacesbetweencommandsareexaggeratedabove,butonespaceissufficientintheactualcommandline.Type"ls"inyourterminaltocheckthatallfourfileshavebeensuccessfullycopied.NowgotoyourCadencefolder,notyourterminal,andchangethe'cdsinit'and'cdsenv'filenamestohavedotsinfrontofthem:

'.cdsinit'and'.cdsenv'（IMPORTANT!

!

）.ThesearefilesthatdefineyourCadenceenvironmentwhenyouinitiatetheprogram.

Alsocopyacomptut.pdfbytyping

       cp  /usr/tools/cds/doc/*  ~/Cadence

Youwillnowseethatacomptut.pdfhasbeencopied.ThisisatutorialforthepreviousversionofCadence（2.5）.AfewoftheoptionnamesandGUIwillbedifferentfromwhatyouwillbeusing,butitwillserveasgoodreferencewhenyouarefacingproblemswiththeuserinterface（shortcutkeys,mousecontrols,etc）.

Nowwearereadytodrawaschematic!

CadenceSchematicEditorInformation

Ifyouhaven'treadtheGeneralinformationpageortheGettingstarted...page,READTHOSEFIRST.

Inthishandout,wearegoingtolearnhowtodrawschematicsinCadenceSchematicEditor.WewilldrawasimpleinverterinComposerandthendoatransientsimulationusingtheAnalogDesignEnvironment.Followthesteps:

Step1:

Invokecadencebytyping virtuoso&  fromyour~/Cadencedirectory.

Step2:

ClickonTools--->LibraryManager....Thelibrarymanagerwindowshouldpopupsoon.

Step3:

ClickonFile--->New--->Library.

Step4:

Onthe"NewLibrary"window,nameyourlibrary"yourUNI".

Step5:

A"technologyfilefornewLibrary"windowpopsup.Clickonattachtoanexistingtechnologylibraryandclickcms9flp.

Step6:

Yourlibraryshouldnowbelistedinthelibrarymanager's"Library"section.

Step7:

Inthelibrarymanagerwindow,ClickonthelibraryyoujustcreatedandchooseFile--->New--->Cellview.

Step8:

Onthe"newfile"window,whichpoppedup,enternewcellnamenexttothetabCell（nameit'inverter'thistime）.Makesurethatthelibrarynameshouldbesameaswhatyougave,viewnameshouldsay"schematic"andtypeshouldsay"composer-schematic".Ifthe"type"showssomethingelse,youcanclickonthebuttonandchoose"schematic".

Step9:

Hit'OK"andaschematiceditingwindowpopsupshowingthelibraryname（yourUNI）,cellname（inverter）andviewnamewhichis"schematic"inthiscase.

Step10:

Nowyouarereadytodrawaschematicinthiswindowwhichwillfinallylookasshowninthefigurebelow.LookaroundforafewsecondsandmakeyourselfcomfortablewiththeGUI.

FIG1

Step11:

FirstwewillplacethenmosandpmosfortheCMOSinverter.Choosefromthetopbar,Create-->Instance.ClickBrowsenexttolibrarynametoopentheLibrarybrowser-addinstancewindow.Choosecms9flpforthe"library",pfetforthe"cell"andsymbolforthe"view".Nowyouwillseeanewwindowcalled"addinstan